<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>电话拨号盘</title>
    <style>
        table {
            text-align: center;
            font-size: 16px;
        }
        .first {
            text-decoration: underline;
            color: red;
        }
        .second {
            text-decoration: line-through;
            color: green;
        }
        .third {
            font-weight: bold;
            color: blue;
        }
    </style>
</head>
<body>
    <table width = "500px" height = "100px"border="1px" cellspacing=0>
        <tr class="first">
            <td>1</td>
            <td>2</td>
            <td>3</td>
        </tr>
        <tr class="second">
            <td>4</td>
            <td>5</td>
            <td>6</td>
        </tr>
        <tr class="third">
            <td>7</td>
            <td>8</td>
            <td>9</td>
        </tr>
    </table>
</body>
</html>